When Estimating a Confidence Interval for the Difference Between 2

question 58

Multiple Choice

When estimating a confidence interval for the difference between 2 means using the method where sample variances are pooled, which of the following assumptions is not needed?

• A) The populations are normally distributed.
• B) The populations have equal variances.
• C) The samples are independent.
• D) The sample sizes are equal.

---

Definitions:

Impatience

A feeling of annoyance or anxiety when faced with delay, demonstrating a lack of tolerance for waiting or enduring something, often leading to hasty actions or decisions.

Harlow's Study

A series of experiments by psychologist Harry Harlow focusing on the importance of caregiving and companionship in the social and cognitive development of monkeys.

Isolated Monkeys

Refer to research studies focusing on the effects of isolation on primate behavior, often highlighting the importance of social interaction for normal development.

Sexual Advances

Actions or behaviors that express a desire for sexual activity or relationship with another person.